diff --git a/lib/config/config.go b/lib/config/config.go
index 08feb4aa1..45eff1600 100644
--- a/lib/config/config.go
+++ b/lib/config/config.go
@@ -31,7 +31,7 @@ import (
 
 const (
 	OldestHandledVersion = 10
-	CurrentVersion       = 50
+	CurrentVersion       = 51
 	MaxRescanIntervalS   = 365 * 24 * 60 * 60
 )
 
diff --git a/lib/config/config_test.go b/lib/config/config_test.go
index 1ae4404fa..71c0b5238 100644
--- a/lib/config/config_test.go
+++ b/lib/config/config_test.go
@@ -120,7 +120,7 @@ func TestDefaultValues(t *testing.T) {
 				},
 				MaxConflicts:        10,
 				MarkerName:          ".stfolder",
-				MaxConcurrentWrites: 2,
+				MaxConcurrentWrites: maxConcurrentWritesDefault,
 				XattrFilter: XattrFilter{
 					Entries:            []XattrFilterEntry{},
 					MaxSingleEntrySize: 1024,
diff --git a/lib/config/folderconfiguration.go b/lib/config/folderconfiguration.go
index 1dee2085e..a6abedab5 100644
--- a/lib/config/folderconfiguration.go
+++ b/lib/config/folderconfiguration.go
@@ -36,8 +36,8 @@ var (
 const (
 	DefaultMarkerName          = ".stfolder"
 	EncryptionTokenName        = "syncthing-encryption_password_token" //nolint: gosec
-	maxConcurrentWritesDefault = 2
-	maxConcurrentWritesLimit   = 64
+	maxConcurrentWritesDefault = 16
+	maxConcurrentWritesLimit   = 256
 )
 
 type FolderDeviceConfiguration struct {
@@ -76,7 +76,7 @@ type FolderConfiguration struct {
 	MarkerName              string                      `json:"markerName" xml:"markerName"`
 	CopyOwnershipFromParent bool                        `json:"copyOwnershipFromParent" xml:"copyOwnershipFromParent"`
 	RawModTimeWindowS       int                         `json:"modTimeWindowS" xml:"modTimeWindowS"`
-	MaxConcurrentWrites     int                         `json:"maxConcurrentWrites" xml:"maxConcurrentWrites" default:"2"`
+	MaxConcurrentWrites     int                         `json:"maxConcurrentWrites" xml:"maxConcurrentWrites" default:"0"`
 	DisableFsync            bool                        `json:"disableFsync" xml:"disableFsync"`
 	BlockPullOrder          BlockPullOrder              `json:"blockPullOrder" xml:"blockPullOrder"`
 	CopyRangeMethod         CopyRangeMethod             `json:"copyRangeMethod" xml:"copyRangeMethod" default:"standard"`
diff --git a/lib/config/migrations.go b/lib/config/migrations.go
index 532b3012c..99dadb6ed 100644
--- a/lib/config/migrations.go
+++ b/lib/config/migrations.go
@@ -28,6 +28,7 @@ import (
 // put the newest on top for readability.
 var (
 	migrations = migrationSet{
+		{51, migrateToConfigV51},
 		{50, migrateToConfigV50},
 		{37, migrateToConfigV37},
 		{36, migrateToConfigV36},
@@ -98,6 +99,18 @@ func (m migration) apply(cfg *Configuration) {
 	cfg.Version = m.targetVersion
 }
 
+func migrateToConfigV51(cfg *Configuration) {
+	oldDefault := 2
+	for i, fcfg := range cfg.Folders {
+		if fcfg.MaxConcurrentWrites == oldDefault {
+			cfg.Folders[i].MaxConcurrentWrites = maxConcurrentWritesDefault
+		}
+	}
+	if cfg.Defaults.Folder.MaxConcurrentWrites == oldDefault {
+		cfg.Defaults.Folder.MaxConcurrentWrites = maxConcurrentWritesDefault
+	}
+}
+
 func migrateToConfigV50(cfg *Configuration) {
 	// v50 is Syncthing 2.0
 }